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SUBSEQUENT EVENTS (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
0 Months Ended 12 Months Ended 0 Months Ended
Jun. 19, 2014
Apr. 08, 2011
Dec. 31, 2014
Apr. 03, 2015
item
Mar. 19, 2015
Feb. 28, 2015
Employees and Directors [Member]            
Subsequent Event [Line Items]            
Exercise price of share $ 3.232us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_TitleOfIndividualAxis
= wbai_EmployeesAndDirectorsMember
$ 0.40us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_TitleOfIndividualAxis
= wbai_EmployeesAndDirectorsMember
$ 3.23us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_TitleOfIndividualAxis
= wbai_EmployeesAndDirectorsMember
     
Employees and Directors [Member] | ADS [Member]            
Subsequent Event [Line Items]            
Exercise price of share $ 32.32us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= wbai_AmericanDepositarySharesMember
/ us-gaap_TitleOfIndividualAxis
= wbai_EmployeesAndDirectorsMember
         
Subsequent Event [Member]            
Subsequent Event [Line Items]            
Number of Competent Government Authorities who Jointly Released Public Bulletin Regarding Online Lottery Sales       8wbai_NumberOfCompetentGovernmentAuthoritiesWhoJointlyReleasedPublicBulletinRegardingOnlineLotterySales
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
   
Subsequent Event [Member] | Employees and Directors [Member]            
Subsequent Event [Line Items]            
Exercise price of share         $ 1.00us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_TitleOfIndividualAxis
= wbai_EmployeesAndDirectorsMember
 
Subsequent Event [Member] | Employees and Directors [Member] | ADS [Member]            
Subsequent Event [Line Items]            
Exercise price of share         $ 10.00us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= wbai_AmericanDepositarySharesMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_TitleOfIndividualAxis
= wbai_EmployeesAndDirectorsMember
 
Subsequent Event [Member] | Board of Directors [Member] | ADS [Member]            
Subsequent Event [Line Items]            
Amount of authorised share to be repurchased           $ 30us-gaap_StockRepurchaseProgramAuthorizedAmount1
/ us-gaap_AwardTypeAxis
= wbai_AmericanDepositarySharesMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_TitleOfIndividualAxis
= wbai_BoardOfDirectorsMember